KWh to MJ Converter (Kilowatt-Hours to Megajoules)

1 kilowatt-hour = 3.6 megajoules. To convert kWh to MJ, multiply by 3.6.

1 kWh

3.6 MJ

1 MJ

0.2778 kWh

10 kWh

36 MJ

100 kWh

360 MJ

Printable chart

kWh to MJ chart

66 common values · MJ = kWh × 3.6

Kilowatt-Hours (kWh)	Megajoules (MJ)
1	3.6
2	7.2
3	10.8
4	14.4
5	18
6	21.6
7	25.2
8	28.8
9	32.4
10	36
11	39.6
12	43.2
13	46.8
14	50.4
15	54
16	57.6
17	61.2
18	64.8
19	68.4
20	72
25	90
30	108
35	126
40	144
45	162
50	180
55	198
60	216
65	234
70	252
75	270
80	288
85	306
90	324
95	342
100	360
110	396
120	432
130	468
140	504
150	540
160	576
170	612
180	648
190	684
200	720
250	900
300	1,080
350	1,260
400	1,440
450	1,620
500	1,800
550	1,980
600	2,160
650	2,340
700	2,520
750	2,700
800	2,880
850	3,060
900	3,240
950	3,420
1,000	3,600
1,500	5,400
2,000	7,200
5,000	18,000
10,000	36,000

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How to convert kWh to MJ

1 kilowatt-hour equals 3.6 megajoules, so the conversion is a single multiplication.

MJ = kWh × 3.6

Example: 2 kWh × 3.6 = 7.2 MJ.

About the kilowatt-hour

Kilowatt-Hour (kWh)

A kilowatt-hour is 3.6 megajoules, the energy a 1 kW appliance uses in an hour. It's the unit on electricity bills.

1 kilowatt-hour in every energy unit

Kilocalories859.845 kcal

Kilojoules3,600 kJ

Joules3,600,000 J

Calories859,845.228 cal

British Thermal Units3,412.142 Btu

Watt-Hours1,000 Wh

Megajoules3.6 MJ

Gigajoules0.0036 GJ

Megawatt-Hours0.001 MWh

Therms (US)0.03413 thm

Electronvolts2.247e25 eV

Foot-Pounds2,655,223.737 ft·lbf

Ergs36,000,000,000,000 erg

MJ to kWhReverse conversion BTU to kWh1 Btu = 0.0002931 kWh kWh to BTU1 kWh = 3,412.1416 Btu Therms to kWh1 thm = 29.3001 kWh kWh to Therms1 kWh = 0.03413 thm

kWh to MJ FAQ

How many megajoules are in a kilowatt-hour?

1 kilowatt-hour = 3.6 megajoules.

How many kilowatt-hours are in a megajoule?

1 megajoule = 0.2777777778 kilowatt-hours.

How do I convert kWh to MJ?

Use MJ = kWh × 3.6. For example, 10 kWh = 36 MJ.

Can I print this kWh to MJ chart?

Yes. Use "Print / Save PDF" next to the converter for a one-page chart, or "Download CSV" to open it in Excel or Google Sheets.